Fabrication and Characterization of SiO2/TiO2 Nano-Hybrid Particles

2017 ◽  
Vol 727 ◽  
pp. 335-342
Author(s):  
Xiao Fei Qu ◽  
Dan Dan Xie ◽  
Yu Fei Wang ◽  
Kai Wang
Keyword(s):  
Silicon Dioxide ◽  
Hydrothermal Method ◽  
Hydrothermal Time ◽  
Hybrid Particles ◽  
Titanium Tetrafluoride ◽  
Hydrothermal Temperature ◽  
Structures And Properties ◽  
Bet Analysis ◽  
Fabrication And Characterization

SiO2/TiO2 nano-hybrid particles were successfully prepared by hydrothermal method by using titanium tetrafluoride (TiF4) as the titanium source, silicon dioxide as template. The factors of hydrothermal temperature and hydrothermal time on the morphologies and photocatalytic activity of SiO2/TiO2 nano-spheres were systematically discussed in this paper. The structures and properties of the SiO2/TiO2 nano-hybrid particles were studied by some techniques such as SEM, TEM, XRD and BET analysis. The results indicated that TiO2 prepared by hydrothermal method were anatase crystal, and in the form of polycrystalline. The formation mechanism of SiO2/TiO2 nano-hybrid particles was also discussed.

Preparation and Characterization of ZrO2/CNTs by Hydrthermal Method

2011 ◽  
Vol 335-336 ◽  
pp. 28-31
Author(s):  
Yu Ying Zheng ◽  
Wen Jun Ji ◽  
Jun Li ◽  
Hui Min Huang ◽  
Ming Sun
Keyword(s):  
Zeta Potential ◽  
Hydrothermal Method ◽  
Surface Active Agent ◽  
Active Agent ◽  
Hydrothermal Time ◽  
Hydrothermal Temperature ◽  
Zeta Potentials ◽  
Surface Active

Nano-compounds of ZrO2/CNTs were prepared by hydrothermal method. The ZrO2/CNTs nano-compounds were characterizated by XRD, TEM, BET and Zeta potentials. The results showed that perfect hydrothermal temperature was 180°C, hydrothermal time was 11h, pH was 9.5. It is showed by the analysis of TEM and Zeta potential, adding surfacant CTBA, the surface of nano-tube and Zr(OH)4colloids take different charge, and they adsorpt each other. And ZrO2particles were successfully coated on the CNTs in surface-active agent of CTBA.

scholarly journals Synthesis of ZnMn2O4 nanostructure via hydrothermal method

2020 ◽  
Vol 9 (3) ◽  
pp. 58-62
Author(s):  
Linh Nguyen Le My ◽  
Nguyen Do Mai
Keyword(s):  
Hydrothermal Method ◽  
Calcination Temperature ◽  
Crystalline Form ◽  
Hydrothermal Time ◽  
X Ray Diffraction ◽  
Spinel Type ◽  
Hydrothermal Temperature ◽  
X Ray ◽  
Factors Influencing

In this study, the spinel-type ZnMn2O4 material was successfully synthesized via hydrothermal method. Several factors influencing the synthesis of material such as Zn/Mn mole ratio, hydrothermal temperature and calcination temperature were studied. The characterization of expected samples using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier Transform Infrared (FTIR), surface area analysis (BET) was conducted. The XRD results indicated that the highly ordered crystalline form of spinel ZnMn2O4 was synthesized in the conditions: Zn/Mn mole ratio of 1:2, hydrothermal temperature of 120 °C, hydrothermal time of 24 h and calcination temperature of 500 °C.

Fabrication and characterization of deformed microdisk cavities in silicon dioxide with high Q-factor

2020 ◽  
Vol 59 (26) ◽  
pp. 7893
Author(s):  
Arne Behrens ◽  
Martí Bosch ◽  
Patrick Fesser ◽  
Martina Hentschel ◽  
Stefan Sinzinger
Keyword(s):  
Silicon Dioxide ◽  
Q Factor ◽  
High Q ◽  
Fabrication And Characterization

The Microstructure and Growth Behavior of Bi2Fe4O9 Superfine Particles Synthesized by Hydrothermal Method

2018 ◽  
Vol 281 ◽  
pp. 78-83
Author(s):  
Hai Peng Song ◽  
Qi Sun ◽  
Yuan Yu Wang
Keyword(s):  
Electron Microscopy ◽  
Hydrothermal Method ◽  
Phase Structure ◽  
Ostwald Ripening ◽  
Growth Behavior ◽  
Hydrothermal Time ◽  
Orthorhombic Structure ◽  
Hydrothermal Conditions ◽  
Hydrothermal Temperature ◽  
Transmission Electron

In this work, Bi2Fe4O9superfine particles were prepared by hydrothermal method and effects of hydrothermal conditions on the microstructure of Bi2Fe4O9, especially the concentration of OH-([OH-]) in initial solutions, were investigated. The results showed that [OH-] had obvious influences on the growth of Bi2Fe4O9under the same hydrothermal temperature and hydrothermal time. Phase structure of Bi2Fe4O9unchanged with the increase of [OH-] and maintained orthorhombic structure. Besides, the microstructure of Bi2Fe4O9was carefully studied through transmission electron microscopy (TEM). The results suggested that the mechanism of Bi2Fe4O9growth was Ostwald ripening. In conclusion, Bi2Fe4O9superfine particles with good morphology and microstructure can be successfully synthesized when the concentration of OH-is 2 mol/L and hydrothermal conditions are 240 °C for 6h.Keywords: Bi2Fe4O9, hydrothermal method, phase structure, growth mechanism Topic code numbers: C2

scholarly journals Fabrication and characterization of distinctive ZnO/ZnS core–shell structures on silicon substratesviaa hydrothermal method

RSC Advances ◽  
2018 ◽  
Vol 8 (46) ◽  
pp. 26341-26348 ◽  
Author(s):  
Chin-Chi Cheng ◽  
Wei Chih Weng ◽  
Hsueh I Lin ◽  
Jo Lun Chiu ◽  
Hong-Yu Jhao ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Shell Structure ◽  
Shell Structures ◽  
Core Shell ◽  
Core Shell Structure ◽  
Fabrication And Characterization

A distinctive novel ZnO/ZnS core–shell structure on silicon was reported in this study.

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